Re: [CentOS-virt] How many virtual guest 'cpus' can a core duo 'quad' core support

On Wed, February 22, 2012 12:25, Todd And Margo Chester

Therefore, in your given case, think six not twelve. Common advice is to leave one core for the host OS/scheduler. Which leaves you with 5 physical CPUs to allocate.

Thank you. I never planned to allocate to any guest more cpus that were physically available. What I was checking was that a single physical cpu with four cores actually counted as four cpus insofar as kvm itself was concerned. I have allocated guests their processors on the basis that 1 core = 1 cpu. But it occurred to me that core might actually mean something different and so I wanted to verify my understanding.